Pull-up chair



FIG. 1 is a perspective view of a pull-up chair showing my new design;

FIG. 2 is a front view;

FIG. 3 is a side view, the opposite side being the same;

FIG. 4 is a top view; and,

FIG. 5 is a rear view.

The ornamental design for a pull-up chair, as shown and described.